BHV-11870: Support moon.Item Icon Overlay

Adding moon.ItemOverlay kind to support common item pattern.

Item is composed of label and icons
Label should have marquee
Icons can be on the left/right side of label
Icons can be shown on focus and auto hide
We can avoid use of fittable inside of item by using this new kind.

DCO-1.1-Signed-Off-By: Kunmyon Choi kunmyon.choi@lge.com